Reading comprehension and vocabulary tests often include items that ask you to distinguish between two or more homophones.homophones are words that sound the same but have different spellings and meanings the most common question type gives sentences with pairs of homophones in parentheses.
Your job is to choose the word that best fits in the sentence.

EXAMPLE : Wearing (genes/jeans) and T-shirts , the scientists did

experiments on (Genes/Jeans) all weekend.